品牌
代理商厂商性质
苏州市所在地
中国台湾华仪电子EXTECH 1978年创立，EXTECH为电子安规检测仪器的，产品包括耐压测试仪、绝缘阻抗测试仪、接地阻抗测试仪、泄漏电流（接触电流）仪、交流变频电源等。
Extech 7742 全功能安规综合测试仪超过30年的经验累积，中国台湾华仪电子、美国AR跨国研发团队合作；在产品服务上，坚持专业技术、产品设计与zui高品质。近30年来，华仪对于产品完善品质的坚持与提供客户完整解决方案的努力，获得客户的广在回响，让华仪始终稳居大中华地欧测试仪器市场。我司做为中国台湾华仪电子EXTECH多年的战略合作伙伴，我们将提供更好的服务及更低的价格。
Extech 7742 全功能安规综合测试仪 产品特点:
· 自动提示讯息功能（Prompt）。
· 快速放电线路 （:104990）。
· 可设定校正日期-时间的预警功能。
· 内建50组程序记忆、每一组30个测试步骤，可于一次设定连续测试。
· 全范围电压输出稳压率在1%以内。
· 键盘锁定功能。
· 内含防高压触电线路Smart GFI （:169000）。
· 简单易懂的人机界面。
· 缓升上限（Ramp High）设定（:100859）。
· 充电下限（Charge Low）设定 （:106128）。
· 内建PLC Remote可程序遥控界面。
· 可外接标准GPIB/RS-232界面作控制。
· 备有小电流接地阻抗检查功能（Continuity）。
· 量测速度快，准确度高。
| Model | 7742 | |||
|---|---|---|---|---|
| AC WITHSTAND VOLTAGE | ||||
| Range | Resolution | Accuracy | ||
| Output Voltage, ACV | 0-5000 | 1 | ± （2% of setting + 5V） | |
| Output Frequency | 50Hz/60Hz ±0.1%, User Selection | |||
| Output Waveform | Sine Wave ,THD.<2% （Resistive Load）, Crest Factor = 1.3 - 1.5 | |||
| Output Regulation | ± （1% of output + 5V）, From no load to full load | |||
| SETTINGS | ||||
| HI and LO-Limit （Total）, current, mA | 0.000-9.999 （0=OFF） | 0.001 | ± （2% of setting + 2 counts） | |
| 10.00-40.00 | 0.01 | |||
| HI and LO-Limit （Real）, current, mA | 0.000-9.999 | 0.001 | ± （3% of setting + 50µA） | |
| 10.00-40.00 | 0.01 | |||
| Ramp-Up Timer, second | 0.1 - 999.9 | 0.1 | ± （0.1% + 0.05 sec） | |
| Ramp-Down Timer, second | 0.0-999.9 | |||
| Dwell Timer, second | 0, 0.4 - 999.9 （0=continuous） | |||
| Ground Continuity | Current: DC 0.1 A ± 0.01A, fixed | |||
| Max. Ground Resistance: 1 Ω ± 0.1Ω, fixed | ||||
| Arc Detection | 1 - 9 ranges （9 is the most sensitivity） | |||
| DC WITHSTAND VOLTAGE | ||||
| Output Voltage, DCV | 0 -5000 | 1 | ± （2% of setting + 5V） | |
| DC Output Ripple | < 4 %（5KV/20mA at Resistive Load） | |||
| SETTINGS | ||||
| HI and LO-Limit, current, µA | 0.0 - 999.9 | 0.1 | ± （2% of setting + 2 counts） | |
| 1000 - 20000 | 1 | |||
| Ramp-Up Timer, second | 0.4 - 999.9 | 0.1 | ± （0.1% + 0.05 sec） | |
| Ramp-Down Timer, second | 0.0, 1.0-999.9 | |||
| Dwell Timer, second | 0, 0.3 - 999.9 （0=continuous） | |||
| Ramp-HI, current | >20 mA peak maximum, ON/OFF User Selection | |||
| Charge-LO, current | 0.0 - 350.0 µA DC or Auto Set | |||
| Discharge Time | ≦ 200 msec | |||
| Maximum Capacitive Load DC Mode | 1µF < 1KV 0.08µF < 4KV | |||
| 0.75µF < 2KV 0.04µF < 5KV | ||||
| 0.5µF < 3KV | ||||
| Ground Continuity | Current: DC 0.1 A ± 0.01A, fixed | |||
| Max. Ground Resistance: 1 Ω ± 0.1Ω, fixed | ||||
| Arc Detection | 1 - 9 ranges （9 is the most sensitivity） | |||
| INSULATION RESISTANCE | ||||
| Output Voltage, DCV | 50 - 1000 | 1 | ± （2% of setting + 2 counts） | |
| Charging Current | Maximum >20mApeak | |||
| SETTINGS | ||||
| HI and LO-Limit, resistance, MΩ | 0.05 - 99.99 （HI – Limit: 0 = OFF） | 0.01 | Same as Resistance MEASUREMENT Accuracy | |
| 100.0-999.9 | 0.1 | |||
| 1000-50000 | 1 | ± （0.1% + 0.05 sec） | ||
| Ramp-Up Timer, second | 0.1 – 999.9 | 0.1 | ||
| Ramp-Down Timer, second | 0=OFF, 1.0-999.9 | |||
| Delay Timer, second | 0, 1.0 - 999.9 （0=continuous） | |||
| Charge-LO, current, µA | 0.000 - 3.500 or Auto Set | |||
| GROUND BOND | ||||
| Output AC Current, A（7742 ） | 1.00 – 40.00 | 0.01 | ± （2 % of setting + 2 counts） | |
| Output Voltage, Vac | 3.00 – 8.00 | 0.01 | ± （2 % of setting + 3 counts） | |
| Output Frequency, Hz | 50Hz/60Hz ±0.1%, User Selection | |||
| Output Regulation | ± （1% of output + 0.02A）, Within maximum load limits, and over input voltage range. | |||
| Maximum Loading | 1.00–10.00A/0–600mΩ, 10.01–30.00A/0–200mΩ, 30.01–40.00A/0–150mΩ | |||
| SETTINGS | ||||
| Lead Resistance Offset, mΩ | 0-200 | 1 | 1.00-2.99A,± （3 % of setting + 3 counts ） 3.00 - 30A,± （2 % of setting + 2 counts ） 3.00 - 40A,± （2 % of setting + 2 counts ） | |
| HI and LO-Limit Resistance, mΩ | 0 – 150 （30.01-40.00A） | 1 | ||
| 0 – 200 （10.01-30.00A） | ||||
| 0 – 600 （1-10.00A） | ||||
| Dwell Timer, second | 0, 0.5 - 999.9 （0 = continuous） | 0.1 | ± （0.1% + 0.05 sec） | |
| CONTINUITY TEST | ||||
| Output Current, DC | 0.1A ± 0.01A, fixed | |||
| SETTINGS | ||||
| Lead Resistance Offset, Ω | 0.00-2.00 | 0.01 | ± （3% of setting+2 counts） | |
| HI and LO-Limit, Resistance, Ω | 0.00 – 10.00 （0=OFF） | |||
| Dwell Timer, second | 0,0.3-999.9 | 0.1 | ± （0.1% + 0.05 sec） | |
| Opt.734 （0 - 10kΩ） | ||||
| Output Current | DC 0.1A ± 0.01A,Max. | |||
| SETTINGS | ||||
| Max-Lmt, Ω | 0.00 – 9.99 | 0.01 | ± （1% of setting+5 counts） | |
| 10.0 – 99.9 | 0.1 | ± （1% of setting+2 counts） | ||
| 100 – 999 | 1 | |||
| 1000 – 9999 | 1 | |||
| Min-Lmt, Ω | 0.00 – 9.99 | 0.01 | ± （1% of setting+5 counts） | |
| 10.0 – 99.9 | 0.1 | ± （1% of setting+2 counts） | ||
| 100 – 999 | 1 | |||
| 1000 – 9999 | 1 | |||
| Dwell Timer, second | 0.0, 0.3 – 999.9 （0 = continuous） | 0.1 | ± （0.1% + 0.05 sec） | |
| Resistance Offset, Ω | 0.00 – 2.00 | 0.01 | ± （1 % of reading + 5 counts） | |
| MEASUREMENT | ||||
| Range | Resolution | Accuracy | ||
| Voltage, KV（AC/DC） | 0.00-5.00 | 0.01 | ± （1.5 % of reading +1 count） | |
| Voltage, Vdc （IR only） | 0-1000 | 1 | ± （1.5% of reading + 2 counts） | |
| AC Current （Total）, mA | 0.000-3.500 | 0.001 | ± （2% of reading + 2 counts） | |
| 3.00-40.00 | 0.01 | |||
| AC Current （Real）, mA | 0.000-9.999 | 0.001 | ± （3% of reading + 50?A） | |
| 10.00-40.00 | 0.01 | All Ranges PF > 0.1 , V > 250VAC | ||
| DC Current, µA | 0.0 - 350.0 | 0.1 | ± （2% of reading + 2 counts） | |
| DC Current, mA | 0.300 – 3.500 | 0.001 | ||
| 3.00-20.00 | 0.01 | |||
| AC Current, A （G.B for 7742 only） | 0.00-40.00 | 0.01 | ± （3 % of reading + 3 counts） | |
| Resistance, MΩ （IR） | 50-499V / 500-1000V | 50 – 499V0.05–999.9, ±（7% of reading+2 counts） | ||
| 0.050-1.999 / 0.050-9.999 | 0.001 | 500 – 1000V | ||
| 2.00-19.99 / 0.050-9.999 | 0.01 | 0.10–999.9, ±（2% of reading+2 counts） | ||
| 20.0-199.9 / 100.0-999.9 | 0.1 | 1000–9999, ±（5% of reading+2 counts） | ||
| 200-50000 / 1000-50000 | 1 | 10000–50000, ±（15% of reading+2 counts） | ||
| Resistance, mΩ （GB） | 0-600 | 1 | 1.00 – 2.99 A, ± （3 % of reading + 3 counts） | |
| 3.00 – 40.00 A, ± （2 % of reading + 2 counts） | ||||
| Resistance, Ω （Continuity） | 0.00-10.00 | 0.01 | ± （3 % of reading + 2 counts） | |
| Resistance, Ω （Continuity） Opt.734 | 0.00 – 9.99 | 0.01 | ± （1% of reading+5 counts） | |
| 10.0 – 99.9 | 0.1 | ± （1% of reading+2 counts） | ||
| 100 – 999 | 1 | |||
| 1000 – 9999 | 1 | |||
| GENERAL | ||||
| Input Voltage AC | 115/230Vac±15%, 50/60Hz ± 5%, Fuse 10A/250V Slow-Blow for 7742 Model | |||
| PLC Remote Control | Input : Test, Reset, Interlock, Recall File 1 through 10 | |||
| Output:- Pass, Fail, Test-in-Process | ||||
| Memory | 50 memories, 30 steps/memory | |||
| Graphic Display | 320 x 240 Monographic LCD, 9 ranges contrast setting | |||
| Safety | Built-in Smart GFI circuit,GFI trip current 450µA max, HV shut down speed: <1mS | |||
| Interface | Standard RS232,Optional GPIB （IEEE-488.2）,Multi-function Interface Card,Ethernet Card. | |||
| Security | Programmable password lockout capability to avoid unauthorized access to test set-up program. | |||
| Alarm Volume Setting | Range: 0-9 ;0=OFF, 1 is softest volume, 9 is loudest volume. | |||
| Calibration | Software and adjustments are made through the front panel. Automatic Calibration alert function to signal operator when re-calibration is due. | |||
| Environment | 0-40℃, 20-80%RH | |||
| Dimensions/Net Weight | 430mm（W）×133mm（H）×500 mm（D）/30Kg for MODEL 7742 | |||
| STANDARD ACCESSORIES | ||||
| Power Cord（10A） | ×1 | |||
| Fuses | ×2 （Including a spare contained in the fuse holder） | |||
| Interlock Disable Key（1505） | ×1 | |||
| Hipot Test Lead ,1.5m（1101） | ×1 | |||
| Ground Bond Test Lead 40A ,1.6m（1137） | ×1 | |||
| Ground Bond Return Lead 40A ,1.6m（1138） | ×1 | |||
| RS232 Link Cable 1.5m（1130） | ×1 | |||
| MATRIX SCANNER MODULE （Opt.736 for 7742） | ||||
| High Voltage Rating | 5KVAC/5KVDC | |||
| High Current Rating | 40 A | |||
| Number of HV Channel | 8 | |||
| Number of HA Channel | 8 | |||
| RUN TEST MODULE （Opt.738,Opt.739 for 7742） | ||||
| MEASUREMENT | ||||
| Range | Resolution | Accuracy | ||
| Voltage, Vac | 00.-277.0 | 0.1 | ± （1.5% of reading +2counts）, 30.0-277.0V | |
| Current, Aac | 0.00-15.00 | 0.01 | ± （2.0% of reading + 2counts） | |
| Power, Watts | 0-4200 | 1 | ± （5% of reading + 3 counts） | |
| Power, Factor | 0.000-1.000 | 0.001 | ± （8% of reading + 2 counts） | |
| Leakage Current, mA | 0.00-10.00 | 0.01 | ± （2% of reading + 2 counts） | |
| MD Circuit | Leakage Current measuring resistance = 2KΩ±1% | |||
| Timer, second | 0.0-999.9 | 0.1 | ± （0.1% of reading + 0.05 sec） | |
| SETTINGS | ||||
| HI and LO Limit AC Voltage, V | 0.0-277.0 | 0.1 | ± （1.5% of setting + 0.2 V）, 30.0-277V | |
| HI and LO Limit AC Current, A | 0.00-15.00 | 0.01 | ± （2.0% of setting + 2 counts） | |
| HI and LO Limit AC Power, W | 0 - 4200 | 1 | ± （5.0% of setting + 3 counts） | |
| HI and LO Limit Power Factor | 0.000-1.000 | 0.001 | ± （8% of setting + 2 counts） | |
| HI and LO Limit Leakage Current | 0.00-10.00, Hi-Limit 0=OFF | 0.01 | ± （2% of setting + 2 counts） | |
| Delay Time, second | 0.2-999.9 | 0.1 | ± （0.1% + 0.05 sec） | |
| Dwell Time, second | 0, 0.1-999.9 （0=continuous） | |||
| Cold Resistance | 0~10KΩ | |||
| DUT POWER | ||||
| AC Voltage | 0 - 277.0V, Single phase unblance, 0 - 15.0A maximum | |||
| Power Rating | 4200 W maximum | |||
| DUT Protection | Short circuit current 23A, < 3 sec, Inrush Current 68A Response time 1m sec | |||
| STANDARD ACCESSORIES | ||||
| Power Cord（15A） | ×1 | |||
| LLT Receptacle Adaptor Box 20A ,1.6m（1905） | ×1 | |||
| LINE LEAKAGE TEST MODULE （Opt.739 for 7742） | ||||
| CURRENT MEASUREMENT | ||||
| Frequency Range | DC-1MHz | |||
| Leakage Current Range （RMS） | Resolution | Accuracy （DC-100KHz） | Accuracy （ >100KHz to 1 MHz） | |
| 0.0µA - 999.9µA | 0.1µA | ±（1.5% of reading + 3counts） | ±（5% of reading + 5µA） | |
| 1000µA - 6000µA | 1µA | ±（1.5% of reading + 3counts） | ||
| Leakage Current Range （Peak）, Opt.739 Only | Resolution | Accuracy （DC-100KHz） | Accuracy （ >100KHz to 1 MHz） | |
| 0.0µA - 999.9µA | 0.1µA | ±（10% of reading + 2µA） | ±（10% of reading + 2µA） | |
| 1000µA - 6000µA | 1µA | |||
| LINE VOLTAGE MEASUREMENT | ||||
| Range | 0.0-277.0 VAC | |||
| Resolution | 0.1 V | |||
| Accuracy | ± （1.5% of reading +0.2V）, 30.0-277.0V | |||
| DUT | ||||
| DUT Input Power Rating | 0-277V,AC@ 15Aac max | |||
| DUT Protection | Short circuit current 23A, <3 sec, Inrush Current 68A Response time 1m sec | |||
| SETTINGS | ||||
| High/Low Limit, µA | Range 0.0 - 6000µA（0=OFF） , Resolution 0.1µA | |||
| Delay Time, second | Range 0, 1.0-999.9 （0=continuous）, Resolution 0.1second | |||
| Compliance Standards | A UL544 Non Patient, UL484, IEC60598, UL1363 | |||
| B UL544 Patient Care | ||||
| C UL2601-1, IEC60601-1, EN60601-1 | ||||
| D UL1563 | ||||
| E UL60950, IEC60950, IEC61010-1, IEC60335-1, IEC60990 Fig4 U2 | ||||
| F IEC60990 Fig5 U3 | ||||
| G IEC60990 Fig3 U1 | ||||
| MD A - G components | Accuracy: Resistance ± 1% Capacitor ± 5% | |||
| MD Voltage Limit | Maximum 30V peak or 30VDC | |||
| STANDARD ACCESSORIES | ||||
| Hipot Return Lead ,1.8m（1102） | ×2 | |||
| *product specifications are subject to change without notice. | ||||
